CAIE IGCSE Biology 7.1.2 Principal Dietary Sources and Describe Questions

Practise matching nutrients to principal food sources, body functions and evidence from dietary tables and calculations.

Exam points

match carbohydrate, fat and protein sources or compositions to energy supply, insulation, growth, tissue repair or other stated body functions
link principal sources and roles of vitamin C, vitamin D, calcium and iron to characteristic deficiency outcomes
use supplement or food-table values to calculate intake or justify a dietary recommendation with nutrient-specific data
state fibre sources or explain fibre's role in moving food through the alimentary canal and preventing constipation

[Maximum number: 4]

Carbohydrates are an important component of a balanced diet.
The flow chart in Fig. 3.1 shows some of the processes that happen to carbohydrates in food that is eaten.

Fig. 3.1

Mineral salts are another important component of a balanced diet.

State the importance of calcium ions and iron ions in a balanced diet.
calcium ions
iron ions

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CAIE IGCSE Biology 7.1.2 Principal Dietary Sources and Describe Questions question 1